JPH09168805A - Edging press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an edging press in which load is not suddenly applied to a connection rod or bearings at the time of loading. SOLUTION: In the edging press of a type in which an eccentric crank shaft 1 is fitted and connected to a connecting rod 2 through the bearings, the rotation of the crank shaft 1 is converted to reciprocating motion with the connecting rod 2 and, by this reciprocating motion, a die 10 is reciprocated back and forth, a means for preloading the connecting rod 2 in the opposite direction to the die 10 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a width reduction press for reducing the width of ferrous and non-ferrous materials.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 to 8, a width reduction press has been known. 5 and 6
Shows a width reduction press using a vertical axis type crankshaft, FIG. 5 is a horizontal sectional view thereof, and FIG. 6 is a partial vertical sectional view showing a state where a bearing internal clearance C is present in the bearing. 7 and 8 show a width reduction press using a horizontal shaft type crankshaft, FIG. 7 is a partial vertical sectional view similar to FIG. 6, and FIG. 8 (A) is A-A in FIG. FIG. 8B is a sectional view taken along the arrow BB in FIG. 7. The width reduction press shown in these figures rotates the motor 18 to rotate the two bevel gears 19a, 19b,
A nut that rotates the eccentric crankshaft 1 via gears 20 and 21, converts the rotation of the crankshaft 1 into a reciprocating motion by the connecting rod 2, and slides the reciprocating motion in the spherical seat 4 and the slider 9. Case 5, nut 6,
It is transmitted to a mold 10 through a slider 9 supported by a screw 7, a swivel 8 and a roller 13 so as to be able to move back and forth, and the reciprocating motion of the mold 10 reduces the width of a slab S which is a workpiece. The mold position adjusting mechanism including a worm 12, a worm wheel 11 fixed to the outside of the nut 6, and the like are provided.

Further, the one shown in FIG. 9 is known as the same as the conventional width reduction press described above (see Japanese Patent Laid-Open No. 123123/1991). This width reduction press rotates a crankshaft 1 that is eccentric by the rotation of a motor (not shown), converts this rotational movement into forward and backward reciprocating movements by a connecting rod 2, and this reciprocating movement is performed by a cylinder 23 provided with a spherical seat. And cylinder rod 24
It is transmitted to the die 10 fixed to the cylinder rod 24 via the slab S to reduce the width of the slab S which is the work material, and is used to move the slab S in the same direction as the moving direction. A mold moving mechanism, a mold position adjusting mechanism for adjusting the distance between the two molds 10, 10 and the like are provided.

[0004]

The above-described conventional width reduction press has the following problems when the vertical shaft type crankshaft 1 is used.
As shown in FIG. 6, the bearing internal clearance C may be present in the bearing 3 attached to the connecting rod 2 in the load direction (mold side). In such a case, since the connecting rod 2 or the bearing 3 is suddenly loaded at the time of loading, a large impact is caused, which causes failure and noise. In addition, since there is a bearing internal clearance C, the rotation speed of the roller 3a of the bearing 3 decreases when there is no load, but the roller 3a slips and the surface is roughened because the roller 3a rapidly accelerates under load, and the life of the bearing 3 is shortened. There was a drawback that

When the horizontal shaft type crankshaft 1 is used, as shown in FIG. 8A, in the bearing 3 attached to the connecting rod 2 of the crankshaft 1, the connecting rod 2 is subject to its own weight. Therefore, only the upper roller 3a comes into contact with the bearing 3, and the bearing internal clearance C is generated from both sides of the roller 3a to the lower side. Therefore, the bearing inner clearance C always exists in the load direction (die side) (see FIG. 7), and there was the same drawback as when the above-described vertical axis type crankshaft 1 was used. In addition, in the bearings 29 and 30 provided on the left and right of the bearing 3, FIG.
As shown in FIG. 7, the lower weight of the crankshaft 1 causes only the lower roller 29a to come into contact with the left bearing 29, and the bearing inner clearance C is generated from both sides of the roller 29a to the upper side.

Therefore, in order to eliminate the clearance C in the bearing 3 of the bearing 3 and the clearance of the screw 7, slider 8 and the like, as shown in FIG. 10 and Japanese Patent Laid-Open No. 5-31505, the gap between the housing and the slider 9 is reduced. To 2
A method of providing the individual pullback cylinders 25, 25 has also been proposed, but the forces applied to the screw 7 and the bearing 3 cannot be appropriately selected from each other, and the screw 7 may be heavily loaded or fluctuated. is there. Also, since the number of load repetitions is different, the pullback cylinder 25,
25 or the hydraulic system may have more problems such as oil leakage.

According to the present invention, an eccentric crankshaft is fitted and connected to a connecting rod via a bearing, and the rotation of the crankshaft is converted into a reciprocating motion by the connecting rod. It is an object of the present invention to provide a width reduction press of a type in which the reciprocating motion is performed in such a manner that the connecting rod or the bearing is not abruptly applied with a load.

[0008]

In order to achieve the above object, in the width reduction press of the present invention, an eccentric crankshaft is fitted and connected to a connecting rod through a bearing, and the crankshaft A means for converting the rotation into a reciprocating motion by the connecting rod, and pre-loading the connecting rod of the width reduction press of the type in which the reciprocating motion reciprocates the mold in a direction opposite to the direction of the mold is provided. That is.

Further, in the width reduction press of the present invention,
Either one of the cylinder and the spring is used as the means for applying the preload. Further, in the width reduction press of the present invention, either one of the cylinder and spring means for applying a preload, on the side opposite to the mold of the connecting rod, between the connecting rod and the housing It is installed.

In the width reduction press of the present invention, since the connecting rod is provided with a means for applying a preload in the direction opposite to the direction of the mold, the internal clearance of the bearing does not occur in the load direction, so that the load, that is, the slab Since the rotation of the crankshaft is not rapidly transmitted to the connecting rod as an impact load when the width is reduced, the impact does not become large, which causes no trouble or noise.

Further, since the inner clearance of the bearing does not occur on the mold side, the rotation speed of the roller of the bearing does not decrease even when there is no load. It does not get rough.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described with reference to FIG. In addition, the same reference numerals are given to parts common to the related art. Example 1 A width reduction press according to an example of the present invention will be described with reference to FIGS. 1 and 2. The width reduction press of the present invention shown in FIGS. 1 and 2 uses a vertical-type crankshaft,
1 shows a horizontal sectional view thereof, and FIG. 2 shows a partial vertical sectional view thereof. In the width reduction press of the present invention, as shown in FIG. 1, a die 10 for reducing the slab S is fixed to a slider 9 supported by a roller 13 so as to be able to move back and forth, and a swivel is provided inside the slider 9. 8
The screw 7 is fixed via. A nut 6 is screwed into the screw 7, and a nut case 5 is provided so as to wrap the nut 6, and the nut case 5 slides inside the slider 9.

A spherical seat 4 for receiving a spherical portion at the tip of the connecting rod 2 is fixed to the nut case 5, and the spherical portion at the tip of the connecting rod 2 comes into contact with the spherical seat 4. . A crankshaft 1 which is eccentric by a width E is fitted and connected to the connecting rod 2 via a bearing 3. The crankshaft 1 is axially supported by upper and lower bearings 16 and 17, and is geared by a cup link 22. It is fixed to the shaft of 21 and the motor 18
Rotation of two bevel gears 19a, 19b, gear 20,
It is designed to be rotated via 21.

In the width reduction press of the present invention, the worm 1 is used to adjust the distance between the two molds 10, 10.
2. Worm wheel 1 fixed to the outside of the nut 6
1. A mold position adjusting mechanism including the screw 7, the nut 6 screwed to the screw 7, and the like is provided. By rotating the worm 12, the worm wheel 11 and the nut 6 are rotated, and the screw 7 is moved to the left and right. Then, the slider 9 and the mold 10 fixed to the screw 7 are moved to adjust the interval between the two molds 10 and 10.

Further, in the width reduction press of the present invention, the cylinder rods of the two balance cylinders 14 and 14 fixed to the cylinder frame 15 are fixed to the slider 9, and the screw 7 and the slider 9 have a clearance. It does not happen.

Further, in the width reduction press of the present invention, the cylinder 26 is attached between the connecting rod 2 and the housing 28, and the connecting rod 2 is always pulled in the direction opposite to the direction of the mold 10. It is like this.

In the width reduction press of the present invention, by rotating the motor 18, two bevel gears 19a, 19b,
The eccentric crankshaft 1 is rotated through the gears 20 and 21, the rotation of the eccentric crankshaft 1 is converted into a reciprocating motion by the connecting rod 2, and this reciprocating motion is slid in the spherical seat 4 and the slider 9. A slider 9 supported by a nut case 5, a nut 6, a screw 7, a swivel 8 and a roller 13 so as to be movable back and forth.
The width of the slab S, which is the work piece, is reduced by the reciprocating movement of the mold 10 back and forth. As shown in FIG.
Occurs on the side opposite to the mold 10, and the lower bearing 16 and the upper bearing 1
The bearing internal clearance C of No. 7 is generated on the die 10 side.

Therefore, even if the bearing 3 is rotated in this state, the inside of the bearing 3 is always in contact with the mold 10 side and is not rapidly transmitted to the bearing 3 even when a load is applied. , No cause of trouble and noise. In addition, slippage occurs in the rollers 3a and the surface is roughened.
Does not shorten the life of the.

Embodiment 2 A width reduction press according to another embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a partial vertical sectional view of a width reduction press using a horizontal axis type crankshaft. The width reduction press shown in this figure is similar to that shown in FIG.
The cylinder 26 is mounted between the housing 28 and the housing 28, and the connecting rod 2 is always pulled in the direction opposite to the direction of the mold 10. By providing the cylinder 26, a clearance C inside the bearing 3 of the bearing 3 is generated on the side opposite to the mold 10, and a clearance C inside the bearing of the left bearing 29 and the right bearing 30 is generated on the mold 10 side. The other parts are the same as those described in the first embodiment, and the description thereof will be omitted.

Therefore, even if the bearing 3 is rotated in this state, the inside of the bearing 3 is always in contact with the mold 10 side, and it is not rapidly transmitted to the bearing 3 even when a load is applied, so that the impact is not great. , No cause of trouble and noise. In addition, slippage occurs in the rollers 3a and the surface is roughened.
Does not shorten the life of the.

Example 3 A width reduction press according to another embodiment of the present invention will be described with reference to FIG. 4, and a width reduction press according to another embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 7, a spring 27 is provided instead of the cylinder 26 of the first embodiment. As in the case where the cylinder 26 is provided, the internal clearance C of the bearing 3 is generated on the side opposite to the mold 10, so that the crankshaft 1 and the bearing 3 are separated from each other by the mold 1.
Since the contact is always made on the 0 side and it is not rapidly transmitted to the bearing 3 even when a load is applied, the shock does not become large, and it does not cause a failure or noise.

The width reduction press of the present invention is not limited to the above-mentioned embodiment, and a spring 27 is provided in the width reduction press using a horizontal shaft type crankshaft.
Of course, various changes can be made without departing from the spirit of the present invention.

[0023]

According to the width reduction press of the present invention described above, the following excellent effects are exhibited. (1) When the load is applied, that is, when the width of the slab is reduced, the load is not rapidly transmitted to the bearing, so that the impact does not become large, causing no failure or noise. Also, damage to the roller of the bearing is reduced. (2) Since it suffices to attach parts with a simple structure,
It is inexpensive and does not complicate the structure of the device. (3) The present invention can be applied to both a vertical axis type and a horizontal axis type crankshaft.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a width reduction press using a vertical type crankshaft according to an embodiment of the present invention.

FIG. 2 is a partial vertical sectional view of a width reduction press using a vertical type crankshaft according to an embodiment of the present invention.

FIG. 3 is a partial vertical sectional view of a width reduction press using a horizontal shaft type crankshaft according to another embodiment of the present invention.

FIG. 4 is a partial horizontal sectional view of a width reduction press using a vertical type crankshaft according to another embodiment of the present invention.

FIG. 5 is a horizontal sectional view of a width reduction press using a conventional vertical axis type crankshaft.

FIG. 6 is a partial vertical sectional view showing a state in which a bearing internal clearance exists in a bearing of a width reduction press using a conventional vertical axis type crankshaft.

FIG. 7 is a partial vertical sectional view showing a state where a bearing internal clearance exists in a bearing of a width reduction press using a conventional horizontal shaft type crankshaft.

8A is a sectional view taken along the line AA in FIG. 7, and FIG. 8B is a sectional view taken along the line BB in FIG.

FIG. 9 is a schematic perspective view of another conventional width reduction press.

FIG. 10 is a partial horizontal sectional view of another conventional width reduction press.

[Explanation of symbols]

 1 crankshaft 2 connecting rod 3 bearing 3a roller 4 spherical seat 5 nut case 6 nut 7 screw 8 swivel 9 slider 10 mold 11 worm wheel 12 worm 13 guide roller 14 balance cylinder 15 cylinder frame 16 lower bearing 17 upper bearing 18 motor 19a , 19b Bevel gear 20, 21 Gear 22 Cup link 23 Cylinder 24 Cylinder rod 25 Pullback cylinder 26 Cylinder 27 Spring 28 Housing 29 Left bearing 29a Roller 30 Right bearing

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomokazu Nakao 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawashima Harima Heavy Industries, Ltd. Inside the Yokohama Engineering Center (72) Inventor Yuichi Otsuki Isogo, Yokohama-shi, Kanagawa 1 in Shin-Nakahara-cho, Ward Ishikawashima-Harima Heavy Industries, Ltd. Yokohama Engineering Center (72) Inventor Isao Tezuka 1 in Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi, Kawashima Harima Heavy Industries, Ltd. in Yokohama Engineering Center

Claims (2)

[Claims] 1. A type in which a crankshaft is fitted and connected to a connecting rod via a bearing, rotation of the crankshaft is converted into reciprocating motion by the connecting rod, and the reciprocating motion causes the mold to reciprocate back and forth. In the width reduction press, the width reduction press is provided with means for applying a preload to the connecting rod in a direction opposite to the mold. 2. A width reduction press, wherein the means for applying a preload is one of a cylinder and a spring.